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  1. #ifndef _LINUX_STDDEF_H
  2. #define _LINUX_STDDEF_H
  3.  
  4. #include <uapi/linux/stddef.h>
  5.  
  6. #undef NULL
  7. #define NULL ((void *)0)
  8.  
  9. enum {
  10.         false   = 0,
  11.         true    = 1
  12. };
  13.  
  14. #undef offsetof
  15. #ifdef __compiler_offsetof
  16. #define offsetof(TYPE, MEMBER)  __compiler_offsetof(TYPE, MEMBER)
  17. #else
  18. #define offsetof(TYPE, MEMBER)  ((size_t)&((TYPE *)0)->MEMBER)
  19. #endif
  20.  
  21. /**
  22.  * offsetofend(TYPE, MEMBER)
  23.  *
  24.  * @TYPE: The type of the structure
  25.  * @MEMBER: The member within the structure to get the end offset of
  26.  */
  27. #define offsetofend(TYPE, MEMBER) \
  28.         (offsetof(TYPE, MEMBER) + sizeof(((TYPE *)0)->MEMBER))
  29.  
  30. #endif
  31.